Late 19th Century Sang de Boeuf Neoclassical Pompeian Askos Mystery

The excavations in Pompeii revealed many classical art wonders, one of which was a decorative "askos" or wine jug that ended up in the collection of the Duke of Sutherland. The beautiful form was reproduced in ceramic first in the mid-19th century by Minton (see third picture from left) and then in the 1870s by Joseph Holdcroft (fourth/last picture). This then leads to the mystery sang de boeuf piece that I purchased recently. As you can see the primary design form and motif remain the same, but with some notable changes to the putti and foliage on the side. It is clear that all three forms are variants of the original Pompeian askos with artistic license taken by the producers to fit the tastes of 19th century consumers. Which then leads to the mystery presented by my large sang de boeuf example. The thick and visceral glaze application is certainly in the tastes of the late 19th century potters, but maddeningly the piece is unmarked. Any thoughts?

Dimensions: 11”(H) x 11”(W) x 7”(D).